Reads RMS and Peak Power Measures Modulation Percentage Measures Antenna SWR Measures SSB Modulation Dosy Professional Architecture Large 4 1/2 inch Meter Four Watt Ranges: 0 - 20, 0 - 200, 0 - 2000 and 0 - 4000 Meter Scale Reading 0 - 20 Watts................................................................... 20 Scale 0 - 200 Watts ........................................................ 20 Scale X 10 0 - 2000 Watts .....................................................20 Scale X 100 0 - 4000 Watts ...........................................................4000 Scale The TC-4001 Test Center will indicate the power output (in watts) of your equipment at the point in the transmission line where you have installed the test center. To measure any power from 1 to 2000 watts, just set the Mode Selector Switch to the appropriate range: 20, 200, 2000 watts.